Could Have Been Email vs Slack MCP Server

In-depth architectural comparison of the Could Have Been Email and Slack MCP Server MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

C

Choose Could Have Been Email when:

• You need dedicated capabilities in the Communication domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: could_have_been_email_analyze.

Explore Could Have Been Email Details

Choose Slack MCP Server when:

• You need dedicated capabilities in the Communication domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: other (Free / Open Source).
• You have access to required keys: SLACK_MCP_ADD_MESSAGE_TOOL.
• Primary tools included: UserID, UserName, RealName.

Explore Slack MCP Server Details

Feature & Specification Comparison

Specification	C Could Have Been Email Communication	Slack MCP Server korotovsky Communication
Summary	could-have-been-email MCP — wraps StupidAPIs (requires X-API-Key)	The most powerful MCP server for Slack Workspaces.
Category & Scope	Communication	Communication

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "could-have-been-email": {
      "command": "npx",
      "args": [
        "-y",
        "could-have-been-email"
      ]
    }
  }
}

{
  "mcpServers": {
    "korotovsky-slack-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/inspector"
      ],
      "env": {
        "SLACK_MCP_ADD_MESSAGE_TOOL": "YOUR_SLACK_MCP_ADD_MESSAGE_TOOL_HERE"
      }
    }
  }
}

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